Question 2

(a) A parking management company reported the following information for a sample of 200 customers on the number of hours' cars are parked and the amount they are charged.

(ii) Identify the mean and the standard deviation of the number of hours parked. How long is a typical customer parked?

If you need to draw a diagram or figure (and cannot do so in MS Word), take a picture of the image you have drawn and insert it in your answer. You are reminded that your overall file size of your submission of this TOA should not exceed 500MB. For a table, you are advised to copy the table given in the question or draw it in MS Word. For an equation, you are advised to write the equation in MS Word.

(5 marks)

(c) Explain two (2) concerns in his research on examining whether Singapore had more rainy days per month than before. (5 marks) Question 2 (a) A parking management company reported the following information for a sample of 200 customers on the number of hours' cars are parked and the amount they are charged. Number of Hours Frequency Amount Charged 1 31 3 2 50 6 3 55 8 4 48 10 5 16 12 Table 2-1 (i) Construct a probability distribution table for the number of hours parked. If you need to draw a diagram or figure (and cannot do so in MS Word), take a picture of the image you have drawn and insert it in your answer. You are reminded that your overall file size of your submission of this TOA should not exceed 500MB. For a table, you are advised to copy the table given in the question or draw it in MS Word. For an equation, you are advised to write the equation in MS Word. (3 marks) (ii) Identify the mean and the standard deviation of the number of hours parked. How long is a typical customer parked? If you need to draw a diagram or figure (and cannot do so in MS Word), take a picture of the image you have drawn and insert it in your answer. You are reminded that your overall file size of your submission of this TOA should not exceed 500MB. For a table, you are advised to copy the table given in the question or draw it in MS Word. For an equation, you are advised to write the equation in MS Word.